Transcriptomic and metabolomic analyses provide new insights into the appropriate harvest period in regenerated bulbs of Fritillaria hupehensis
文献类型: 外文期刊
作者: Duan, Yuanyuan 1 ; Wu, Jiaqi 1 ; Wang, Fanfan 1 ; Zhang, Kaiqi 1 ; Guo, Xiaoliang 1 ; Tang, Tao 1 ; Mu, Sen 1 ; You, Jingmao 1 ; Guo, Jie 1 ;
作者机构: 1.Hubei Acad Agr Sci, Inst Chinese Herbal Med, Key Lab Biol & Cultivat Chinese Herbal Med, Minist Agr & Rural Affairs, Enshi, Peoples R China
2.Hubei Acad Agr Sci, Hubei Engn Res Ctr Under forest Econ, Wuhan, Peoples R China
3.Hubei Acad Agr Sci, Inst Chinese Herbal Med, Hubei Engn Res Ctr Good Agr Pract GAP Prod Chinese, Enshi, Peoples R China
关键词: Fritillaria hupehensis; bulb development; steroidal alkaloids; metabolic; WGCNA
期刊名称:FRONTIERS IN PLANT SCIENCE ( 影响因子:5.6; 五年影响因子:6.8 )
ISSN: 1664-462X
年卷期: 2023 年 14 卷
页码:
收录情况: SCI
摘要: IntroductionThe bulb of Fritillaria hupehensis, a traditional cough and expectorant medicine, is usually harvested from June to September according to traditional cultivation experience, without practical scientific guidance. Although steroidal alkaloid metabolites have been identified in F. hupehensis, the dynamic changes in their levels during bulb development and their molecular regulatory mechanisms are poorly understood. MethodsIn this study, integrative analyses of the bulbus phenotype, bioactive chemical investigations, and metabolome and transcriptome profiles were performed to systematically explore the variations in steroidal alkaloid metabolite levels and identify the genes modulating their accumulation and the corresponding regulatory mechanisms. ResultsThe results showed that weight, size, and total alkaloid content of the regenerated bulbs reached a maximum at IM03 (post-withering stage, early July), whereas peiminine content reached a maximum at IM02 (withering stage, early June). There were no significant differences between IM02 and IM03, indicating that regenerated bulbs could be harvested appropriately in early June or July. Peiminine, peimine, tortifoline, hupehenine, korseveramine, delafrine, hericenone N-oxide, korseveridine, puqiedinone, pingbeinone, puqienine B, puqienine E, pingbeimine A, jervine, and ussuriedine levels were upregulated in IM02 and IM03, compared with IM01 (vigorous growth stage, early April). The Kyoto Encyclopedia of Genes and Genomes enrichment analysis indicated that the accumulation of steroidal alkaloid metabolites mainly occurred prior to IM02. HMGR1, DXR, CAS1, CYP 90A1, and DET2 may play a positive role in peiminine, peimine, hupehenine, korseveramine, korseveridine, hericenone N-oxide, puqiedinone, delafrine, tortifoline, pingbeinone, puqienine B, puqienine E, pingbeimine A, jervine, and ussuriedine biosynthesis, whereas the downregulation of FPS1, SQE and 17-DHCR may lead to a reduction in peimisine levels. Weighted gene correlation network analysis showed that CYP 74A2-1, CYP 74A2-2, CYP 71A26-1, CYP 71A26-2, and CYP74A were negatively correlated with peiminine and pingbeimine A, whereas CYP R and CYP707A1 were positively correlated. . CYP 74A2-1 and CYP 74A2-2 may play a negative role in peimine and korseveridine biosynthesis, whereas CYP R plays a positive role. In addition, the highly expressed C2H2, HSF, AP2/ERF, HB, GRAS, C3H, NAC, MYB-related transcription factors (TFs), GARP-G2-like TFs, and WRKY may play positive roles in the accumulation of peiminine, peimine, korseveridine, and pingbeimine A. DiscussionThese results provide new insights into scientific harvesting of F. hupehensis.
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